Help updating and jailbreaking an already jailbroken 3.0 3G
Ive read through alot of the threads on here and ill be honest and admit im just getting more confused....so here goes my question.
I have a 3.0 3G iphone now on the T-Mobile network. I have synched my iphone so have everything backed up.
I am wanting to update my software to the latest version possible, and hopefully then be able to restore my old applicatins. From what i read i can only go as far as 3.12?
Is this possibe? I am guessing i simply update the software on Itunes, which will remove the jailbreak, and then re-jail break myphone? Is this correct? And how do i best jailbreak my phone then? Or do i do something else? A step by step walkthrough would be much appreciated. I have a PC, not a MAC
Any help would be greatly appreciated